"This trend will continue; it will continue because we understand why it's happening," Gavin Schmidt, director of the NASA Goddard Institute of Space Studies, told the Associated Press. "It's happening because the dominant force is carbon dioxide."
Climate debate heats up after 2015 described as warmest year on record →
"It's a fair summary of where we are," said Gavin Schmidt, head of NASA's Goddard Institute for Space Studies. "2015 is going to be exceptional in many ways."
U.N. World Meteorological Organization: It's record hot out there this year →